Whole genes and parts of genes can be extracted from chromosomes, linked to other DNA molecules to form recombinant DNA and introduced into living cells. In a process known as gene cloning, the host cell's biochemical processes are used to make many copies of the inserted gene and the protein it codes for.
First one is geosphere
second is biosphere
third is atmosphere
The answer is A or C cuz it the stomach has more part to break down foods.
